Multiple-spindle drilling machine



Feb. 17,1231.

w. H, MINER MULTIPLE SPINDLE DRILLING MACHINE 3 Sheena-Sheet l awwemtoz WfZZ/fwDM/VE/f:

Filed June 24, 1927 Feb. 17, 1931. w. H. MINER MULTIPLE SPINDLE DRILLING MACHINE Filed June 24, 192' 3 Sheets-Sheet 3 avwemto'c V shaft 15. This: worm gear is fixed to. the

Patented Fa. 17, 1931 V v WILLIAM-HAROLD Minna, or srnnveuintn; ess2i'oHirsErrs,-'AssIe voavro niuisn a VMAGHINE rooi. COMPANY, A con-ronnrron or MASSACHUSETTS MULTIPLE-summon'iiii-ittii ie iymcrmvn Application filedv June 24,

My invention aims to provide. a machine of'simple and economical construction.

V embodiment of the invention.

7 Fig. 1 is a side elevation of themachine;

Fig. is a plan of the same on a reduced Y scale; V

Fig. 3 is a longitudinal vertical section, with parts in elevation;

Fig. 4 is a partial transverse vertical section; Fig.5 is a horizontal section through the head of'the machine;

Fig. 6 is a section approximatelyzonthe 15 line 6-6 of Fig. 1; g V

Fig. 7 is a section onthe line'77 of Fig. 3. The column "land bed 2 are cast integrally. The spindle carrying head 3 is cast in one piece with the'gear chest 1 which is g 'mounted on the top of the column and fastened by the usual dowels and screws. On top of the gear chest is a cover 5 on which is mounted the motor 6 with a vertical shaft 7 The drill spindles 8 are set in adjustable 2 position by means of arms 9-mounted on, the underside of the'head 3, the spindles'be- 1 ing driven through the usual flexible connections 10 leading toshafts 11 having bearings in a lower wall 12 of the gear chest. and

. carrying at their upper ends pinions '13 arrangedin a circle about-a driving'gear 1 1; journaled on a fixed shaft 15 which has bearings in the wall 12 of the chest and inthe cover5. I Q

The shaft 7 of the motor carries at its" lower end a pinion 16 which drives a gear 17 mounted on a shaft 18 having hearings in the cover 5 and in the lower wall 12.0f the chest. 7 The gear 17 has a driving connection with a worm 19 on the sameshaft; A horizontal shaft 20-hasaworm gear21 driven byithe;

worm 19. The shaft is mounted j in bearing'sin vertical :walls in the gear. chest and has keyed to *its" forward end a worm 22 which drives a'wor'm gear 23 journaledon the central spindle-driving gear 14:. V

The shaft 20 near its rear end carries a worm 2 1 driving a worm gear 25 which is li! mounted on'the vertical shaft QG which acdrivingthe' crossshaft 29. v e p L On the'front-of the lower" end of 'thecolumn, there"is a work-holding table 38 of the} knee .type which has a sliding engagement j with-the column; The sides of thetableover- 1 lztpythe flanges '39 of'the-column: asish'o'wn in Fig; 7;.andncarry plates 'o.verlying the iozvifseri l no.'eo1,174'.

alas the fade the mm. The than gear chestand in the coveri -5 as shown in column '1, having its'lower end, in bearings 26has 'bearings in thelowerwall 1210f the The accompanying drawings illustrate an I on the column and thefib'ase '2; as shownin Fig. 4; Near its lower end the' 'shaft carsleeve 30, Fig. 3,"is keyed on 'theshaft and may be shifted to engage a 'clutchiblock31 onithe gear '28 .to cause "the rotation "of the Shaft, The clutch: is actuated by a forked leverl 732' pivoted on a shaft :33 extending transversely through the machine (Fig. *6)

in-the plate 37 mounted. on'the side of the Column so as to hold the handleintheraised position of-Fig, 1,which is the position for rear faces. of'the flanges=rso as to guide the 7 table; vertically The table islfedby means 'ofiatcam arrayed onitheforwia'rd end' ofthe.

'ri esaworm 27 whichengages-"a wormigear I 281whichr is journaled on a shaft 29 extending to the; front-of the-machine'lAclutch to e shaftc'29 rand-bearing on .the' underside of a) roller '42 fined' inrltheiloweri end of a tubular .post, 43; forms an adj usta'blezpart of the: worktable; and lwhichj should be located 1 directly in. line, with-the centre of the working surfaceof' the table;

While the handle isiliftediand clutchoni the '1 i.

carn' shaft is engaged, the table moves-contain ;u'o usly, ;ithe' icfaml liftingit, and the weight. of

t: Th 'tabl a sfiadapfediforajirtical dju smentbylmeans a sliatt eetbrca edthroegh the' tablegand fixtures holding. the roller :42 KlQYYlI on the cam." The-clam should. be. shaped according-to the job in hand toigive the usual; .quick approach, {slow feed,iquick return and V dwell; lgThe table is brought to- 'restby throw: l ing? out the clutch by lowering the hand 3.0 r a work table, a cam for "feeding the table, a

n gear on said main driving means, aworm on f the upper part of the hollow post 43,'journaled in the top plate of the table and carrying a beveled gear which is driven bya pinion 46 on a shaft 47 extending through the front of the table and having its outer end squared for engagement by a crank.

The drill spindles and cam are thusrun' from a common driving shaftand at a substantially constant speed. The speed of the spindles can be altered by changingfthe rat o between the spin dle pinions 1-3 and theirdriva ing gear 14. The speed of the feed cam can be altered when themachine is builtby using different single or multiple thread Worms for driving the worm gearing at the top and gear, a worm gear on said vertical shaft within said gear chest, and a .worm on said horizontal shaft'meshing with. said worm gear on said vertical shaft.

Inwitness whereof, I havehereunto signed my name. V

i W. HAROLD MINER.

the bottom of the vertical feed shaft 26. Be-

ing set to take care of a particular job, the machine can be. operated at a high rate of production. It is of verysimple designand comparatively few parts so that it can'be operatedwith a comparatively small expend iture'of power. V

Various modifications may be made by those .skilledin the: art without departing from: the invention as defined in the following claims;

1. A 'multiple spindle drilling'machine which comprises a column, a spindle carrying head, a gear chest at the top of'said column,

horizontal cam shaft for rotatingsaid cam,

avertical shaft, transmission gears for driving said horizontal shaft from said vertical shaft, said vertical shaft extending upwardly into-said gear chest, a horizontal shaft in said gear chest, -.a main driving means driving said horizontal shaft, a multiple drillcarrying spindles, a driving gear, gears on-said s'pindles driven from said driving gear, a worm said horizontal shaft meshing with said worm e i gear,a worm. gear on'said vertical shaftwithin-said gear chest,tand a worm onsaidhori zontal shaft meshing with sa dworm gear on sa d .vert'ical shaft. 7 a

LQJA multiple spindle drilling machine V whichcomprises acoluinn, a spindle carrying head, a gear chest at the top ofsaid column, a

'work table,acajmfor feeding saidwork table, means for adjustingthe positionfof said T Y work table relative to said'camat any position. of said cam, a horizontal camshaft for ,rotating said cam,a verticalshaft, gears betweensaid vertical shaft and said cam shaft,

en said inain driving means, a wormon" said horizontah'shaft meshing-With said worm 

